Environmental Conditions And Climatic Stress Tests - Siemens SICAM 7KG85X Manual

Technical Data
12.1 Technical Data
Serial Interface RS485
Connection
Protocol
Baud rate (adjustable)
Maximum distance of transmission
Transmission level
Reception level
Bus termination
Pin No.
1
2
3
4
5
6
7
8
9

Environmental Conditions and Climatic Stress Tests

12.1.4
Environmental Conditions
Temperature data
248
Assignment
Shield
Not assigned
A
RS485 connection pin A
Not assigned
GND
(towards DC +5 V)
DC +5 V
Supply voltage for terminating resistors (max. 100 mA)
RTS
Direction control
(if required for an external conversion)
B
RS485 connection pin B
Not assigned
Operating temperature
Devices with display: the legibility
of the display is impaired at
temperatures < 0 °C (+32 °F)
Temperature during transport
Temperature during storage
Maximum temperature gradient
Terminal side, 9-pin D-sub socket
Refer to 13.2.5.1 Communication Serial
Modbus RTU (optional):
Min. 1200 bit/s
Max. 115 200 bit/s
IEC 60870-5-103 (optional):
Min. 9600 bit/s
Max. 38 400 bit/s
Max. 1 km
(depending on transmission rate)
Low: -5 V to -1.5 V
High: +1.5 V to +5 V
Low: ≤ -0.2 V
High: ≥ +0.2 V
Not integrated, bus termination using plugs with inte-
grated bus terminating resistors.
-25 °C to +55 °C
-13 °F to +131 °F
-40 °C to +70 °C
-40 °F to +158 °F
-40 °C to +70 °C
-40 °F to +158 °F
20 K/h
SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022